Every year between the ages of 25 and 60, the physically inactive male will lose muscle mass and muscle strength at a rate of 0.5 percent and although this number may seem low, it adds up quickly. After the age of 60, male muscle loss doubles to about 1 percent every year. After 70, muscle mass and muscle strength declines by 2percent every year. This doubling continues every ten years until death.
Definition of intestine : the tubular part of the digestive tract that extends from the stomach to the anus â compare large intestine, small intestine See intestine defined for English-language learners
The gastrointestinal tract is an organ system within humans and other animals which takes in food, digests it to extract and absorb energy and nutrients, and expels the remaining waste as feces. The mouth, esophagus, stomach, and intestines are part of the gastrointestinal tract. Gastrointestinal is an adjective meaning of or pertaining to the stomach and intestines. A tract is a collection of related anatomic structures or a series of connected body organs. All bilaterians have a gastrointestin